<template>
  <global-layout>
    <!-- <contextmenu :itemList="menuItemList" :visible.sync="menuVisible" @select="onMenuSelect" />
    <a-tabs
      class="page-tabs"
      @contextmenu.native="e => onContextmenu(e)"
      v-if="multipage"
      :active-key="activePage"
      style="margin-top: -8px; margin-bottom: 8px"
      :hide-add="true"
      type="editable-card"
      @change="changePage"
      @edit="editPage"
    >
      <a-tab-pane :id="page.fullPath" :key="page.fullPath" v-for="page in pageList" forceRender>
        <span slot="tab" :pagekey="page.fullPath">{{ page.name }}</span>
      </a-tab-pane>
    </a-tabs>
    <keep-alive v-if="multipage">
      <router-view />
    </keep-alive>
    <router-view v-else /> -->
    <router-view />
  </global-layout>
</template>

<script>
import GlobalLayout from './GlobalLayout';
// import Contextmenu from '~/menu/Contextmenu';
// 去掉多页模式下引入了右键点击弹出选项的组件引入，因为要去掉多页模式了。

export default {
  name: 'MenuView',
  // components: { Contextmenu, GlobalLayout },
  components: { GlobalLayout },
  data() {
    return {
      pageList: [],
      linkList: [],
      activePage: '',
      menuVisible: false
      /* menuItemList: [
        { key: '1', icon: 'arrow-left', text: '关闭左侧' },
        { key: '2', icon: 'arrow-right', text: '关闭右侧' },
        { key: '3', icon: 'close', text: '关闭其它' }
      ] */
    };
  },
  computed: {
    multipage() {
      return this.$store.state.setting.multipage;
    }
  },
  created() {
    this.pageList.push(this.$route);
    this.linkList.push(this.$route.fullPath);
    this.activePage = this.$route.fullPath;
  },
  watch: {
    $route: function(newRoute, oldRoute) {
      this.activePage = newRoute.fullPath;
      if (!this.multipage) {
        this.linkList = [newRoute.fullPath];
        this.pageList = [newRoute];
      } else if (this.linkList.indexOf(newRoute.fullPath) < 0) {
        this.linkList.push(newRoute.fullPath);
        this.pageList.push(newRoute);
      }
    },
    activePage: function(key) {
      this.$router.push(key);
    },
    multipage: function(newVal, oldVal) {
      if (!newVal) {
        this.linkList = [this.$route.fullPath];
        this.pageList = [this.$route];
      }
    }
  },
  methods: {
    changePage(key) {
      this.activePage = key;
    },
    editPage(key, action) {
      this[action](key);
    },
    remove(key) {
      if (this.pageList.length === 1) {
        this.$router.push('/');
        if (!this.pageList[0].meta.closeable) {
          return;
        }
      }
      this.pageList = this.pageList.filter(item => item.fullPath !== key);
      let index = this.linkList.indexOf(key);
      this.linkList = this.linkList.filter(item => item !== key);
      index = index >= this.linkList.length ? this.linkList.length - 1 : index;
      this.activePage = this.linkList[index];
    },
    onContextmenu(e) {
      const pagekey = this.getPageKey(e.target);
      if (pagekey !== null) {
        e.preventDefault();
        this.menuVisible = true;
      }
    },
    getPageKey(target, depth) {
      depth = depth || 0;
      if (depth > 2) {
        return null;
      }
      let pageKey = target.getAttribute('pagekey');
      pageKey =
        pageKey || (target.previousElementSibling ? target.previousElementSibling.getAttribute('pagekey') : null);
      return pageKey || (target.firstElementChild ? this.getPageKey(target.firstElementChild, ++depth) : null);
    },
    onMenuSelect(key, target) {
      let pageKey = this.getPageKey(target);
      switch (key) {
        case '1':
          this.closeLeft(pageKey);
          break;
        case '2':
          this.closeRight(pageKey);
          break;
        case '3':
          this.closeOthers(pageKey);
          break;
        case '4':
          this.closeAll(pageKey);
          break;
        default:
          break;
      }
    },
    closeOthers(pageKey) {
      let index = this.linkList.indexOf(pageKey);
      this.linkList = this.linkList.slice(index, index + 1);
      this.pageList = this.pageList.slice(index, index + 1);
      this.activePage = this.linkList[0];
    },
    closeLeft(pageKey) {
      let index = this.linkList.indexOf(pageKey);
      this.linkList = this.linkList.slice(index);
      this.pageList = this.pageList.slice(index);
      if (this.linkList.indexOf(this.activePage) < 0) {
        this.activePage = this.linkList[0];
      }
    },
    closeRight(pageKey) {
      let index = this.linkList.indexOf(pageKey);
      this.linkList = this.linkList.slice(0, index + 1);
      this.pageList = this.pageList.slice(0, index + 1);
      if (this.linkList.indexOf(this.activePage < 0)) {
        this.activePage = this.linkList[this.linkList.length - 1];
      }
    }
  }
};
</script>

<style scoped>
>>> .ant-tabs-tab {
  margin-right: 1px !important;
}
</style>
